IOTA/IOTA-ES occultation update for (337) Devosa / UCAC4-340-069587 event on 2023 Apr 21, 13:37 UT Visible from Japan, China Summary ------- On 2023 Apr 21 UT, the 64.4 km diameter asteroid (337) Devosa will occult a 12.5 mag star in the constellation Virgo for observers along a path across Japan, China. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.58 mag to 12.12 mag (the magnitude of the asteroid) for at most 5.510 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 100 * date and approx. time of event: 2023 Apr 21, 13:31 - 2023 Apr 21, 13:44 * geocentric midpoint of event [JD]: 2460056.06799870 * magnitude of target star: 12.49 * magnitude drop [mag]: 0.58 * estimated maximum duration [s]: 5.510 * Moon: 2 % sunlit, 168° distance * Sun: 169° distance * rough path description: Japan, China The occultation path -------------------- * approximate projected width [km]: 99 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.003", 117°) * approx speed of asteroid's shadow [km/s]: 11.6836 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-340-069587 by 337 Devosa on 2023 Apr 21 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 99 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 51 17 42 .. .. .. 51 13 17 .... 100 0 0 51 22 49 13 43 49.8 1 128 -12 51 57 14 50 48 55 52 1 47 50 44 30 .... 101 0 0 50 53 50 13 43 49.6 2 129 -12 51 28 10 50 20 0 51 32 43 50 15 36 -0.72 102 0 0 50 24 44 13 43 49.2 2 130 -13 50 58 59 49 50 58 51 3 31 49 46 34 -0.88 103 0 0 49 55 31 13 43 48.6 3 131 -14 50 29 41 49 21 50 50 34 12 49 17 27 -0.96 104 0 0 49 26 13 13 43 47.9 4 131 -15 50 0 18 48 52 38 50 4 48 48 48 15 -1.00 105 0 0 48 56 51 13 43 47.0 5 132 -16 49 30 50 48 23 22 49 35 20 48 19 0 -1.03 106 0 0 48 27 27 13 43 46.0 6 133 -16 49 1 20 47 54 3 49 5 49 47 49 42 -1.06 107 0 0 47 58 0 13 43 44.7 6 134 -17 48 31 47 47 24 42 48 36 15 47 20 22 -1.07 108 0 0 47 28 33 13 43 43.3 7 134 -18 48 2 13 46 55 21 48 6 40 46 51 2 -1.09 109 0 0 46 59 6 13 43 41.7 8 135 -19 47 32 39 46 26 1 47 37 6 46 21 43 -1.10 110 0 0 46 29 41 13 43 39.9 9 136 -20 47 3 7 45 56 43 47 7 33 45 52 25 -1.11 111 0 0 46 0 18 13 43 37.9 10 137 -21 46 33 37 45 27 27 46 38 2 45 23 10 -1.11 112 0 0 45 30 59 13 43 35.8 11 137 -21 46 4 11 44 58 15 46 8 34 44 53 59 -1.12 113 0 0 45 1 45 13 43 33.4 11 138 -22 45 34 49 44 29 8 45 39 11 44 24 53 -1.12 114 0 0 44 32 37 13 43 30.9 12 139 -23 45 5 33 44 0 7 45 9 54 43 55 53 -1.13 115 0 0 44 3 35 13 43 28.2 13 140 -24 44 36 23 43 31 13 44 40 44 43 27 0 -1.13 116 0 0 43 34 41 13 43 25.2 14 140 -25 44 7 21 43 2 27 44 11 41 42 58 15 -1.14 117 0 0 43 5 56 13 43 22.2 15 141 -26 43 38 28 42 33 50 43 42 47 42 29 39 -1.14 118 0 0 42 37 21 13 43 18.9 16 142 -26 43 9 45 42 5 23 43 14 2 42 1 13 -1.14 119 0 0 42 8 57 13 43 15.4 16 143 -27 42 41 13 41 37 7 42 45 29 41 32 58 -1.14 120 0 0 41 40 45 13 43 11.7 17 143 -28 42 12 52 41 9 3 42 17 7 41 4 55 -1.15 121 0 0 41 12 46 13 43 7.9 18 144 -29 41 44 44 40 41 11 41 48 58 40 37 4 -1.15 122 0 0 40 45 0 13 43 3.9 19 145 -30 41 16 50 40 13 33 41 21 3 40 9 27 -1.15 123 0 0 40 17 28 13 42 59.7 20 146 -31 40 49 10 39 46 10 40 53 22 39 42 5 -1.15 124 0 0 39 50 12 13 42 55.3 20 146 -31 40 21 46 39 19 2 40 25 56 39 14 58 -1.15 125 0 0 39 23 12 13 42 50.8 21 147 -32 39 54 37 38 52 10 39 58 47 38 48 8 -1.15 126 0 0 38 56 29 13 42 46.0 22 148 -33 39 27 46 38 25 36 39 31 54 38 21 34 -1.15 127 0 0 38 30 4 13 42 41.2 23 149 -34 39 1 13 37 59 19 39 5 19 37 55 18 -1.16 128 0 0 38 3 58 13 42 36.1 23 149 -35 38 34 58 37 33 20 38 39 3 37 29 20 -1.16 129 0 0 37 38 11 13 42 30.9 24 150 -35 38 9 2 37 7 41 38 13 7 37 3 42 -1.16 130 0 0 37 12 43 13 42 25.5 25 151 -36 37 43 27 36 42 22 37 47 30 36 38 24 -1.16 131 0 0 36 47 37 13 42 20.0 26 152 -37 37 18 12 36 17 23 37 22 14 36 13 26 -1.16 132 0 0 36 22 51 13 42 14.3 26 153 -38 36 53 18 35 52 45 36 57 20 35 48 50 -1.16 133 0 0 35 58 28 13 42 8.4 27 154 -38 36 28 47 35 28 29 36 32 47 35 24 35 -1.16 134 0 0 35 34 27 13 42 2.5 28 154 -39 36 4 38 35 4 36 36 8 37 35 0 42 -1.16 135 0 0 35 10 49 13 41 56.3 29 155 -40 35 40 52 34 41 5 35 44 50 34 37 13 -1.16 136 0 0 34 47 34 13 41 50.1 29 156 -40 35 17 30 34 17 59 35 21 27 34 14 7 -1.16 137 0 0 34 24 44 13 41 43.7 30 157 -41 34 54 32 33 55 16 34 58 29 33 51 25 -1.16 138 0 0 34 2 19 13 41 37.1 31 158 -42 34 31 59 33 32 58 34 35 55 33 29 8 -1.16 139 0 0 33 40 18 13 41 30.5 31 159 -42 34 9 52 33 11 4 34 13 46 33 7 15 -1.16 140 0 0 33 18 44 13 41 23.7 32 160 -43 33 48 10 32 49 36 33 52 3 32 45 48 -1.16 141 0 0 32 57 35 13 41 16.8 32 161 -43 33 26 55 32 28 35 33 30 47 32 24 48 -1.16 142 0 0 32 36 54 13 41 9.8 33 162 -44 33 6 6 32 8 0 33 9 58 32 4 14 -1.16 143 0 0 32 16 38 13 41 2.7 34 163 -45 32 45 44 31 47 51 32 49 34 31 44 6 -1.16 144 0 0 31 56 50 13 40 55.5 34 164 -45 32 25 49 31 28 9 32 29 38 31 24 25 -1.16 145 0 0 31 37 29 13 40 48.2 35 165 -46 32 6 22 31 8 55 32 10 11 31 5 11 -1.16 146 0 0 31 18 37 13 40 40.8 35 166 -46 31 47 23 30 50 8 31 51 11 30 46 25 -1.16 147 0 0 31 0 13 13 40 33.3 36 167 -47 31 28 53 30 31 50 31 32 40 30 28 8 -1.16 148 0 0 30 42 17 13 40 25.7 36 168 -47 31 10 51 30 14 0 31 14 37 30 10 19 -1.16 149 0 0 30 24 50 13 40 18.0 37 169 -47 30 53 18 29 56 39 30 57 4 29 52 58 -1.16 150 0 0 30 7 52 13 40 10.3 37 170 -48 30 36 15 29 39 47 30 40 0 29 36 7 -1.16 151 0 0 29 51 24 13 40 2.5 37 171 -48 30 19 41 29 23 24 30 23 25 29 19 44 -1.16 152 0 0 29 35 25 13 39 54.6 38 172 -49 30 3 37 29 7 30 30 7 21 29 3 52 -1.16 153 0 0 29 19 57 13 39 46.7 38 173 -49 29 48 3 28 52 6 29 51 46 28 48 28 -1.16 154 0 0 29 4 58 13 39 38.7 39 174 -49 29 33 0 28 37 13 29 36 42 28 33 35 -1.16 155 0 0 28 50 30 13 39 30.7 39 175 -49 29 18 26 28 22 49 29 22 8 28 19 12 -1.16 156 0 0 28 36 32 13 39 22.6 39 176 -50 29 4 24 28 8 56 29 8 5 28 5 19 -1.16 157 0 0 28 23 5 13 39 14.4 39 178 -50 28 50 52 27 55 33 28 54 33 27 51 57 -1.16 158 0 0 28 10 8 13 39 6.3 40 179 -50 28 37 52 27 42 41 28 41 31 27 39 6 -1.16 159 0 0 27 57 43 13 38 58.1 40 180 -50 28 25 23 27 30 19 28 29 2 27 26 45 -1.16 160 0 0 27 45 49 13 38 49.8 40 181 -50 28 13 25 27 18 29 28 17 3 27 14 55 -1.16 161 0 0 27 34 26 13 38 41.6 40 182 -50 28 1 58 27 7 10 28 5 36 27 3 36 -1.16 162 0 0 27 23 35 13 38 33.3 40 183 -50 27 51 4 26 56 22 27 54 41 26 52 49 -1.16 163 0 0 27 13 16 13 38 25.0 41 185 -50 27 40 41 26 46 6 27 44 18 26 42 33 -1.16 164 0 0 27 3 28 13 38 16.7 41 186 -50 27 30 50 26 36 21 27 34 26 26 32 49 -1.16 165 0 0 26 54 12 13 38 8.3 41 187 -50 27 21 31 26 27 8 27 25 7 26 23 36 -1.16 166 0 0 26 45 28 13 38 0.0 41 188 -50 27 12 44 26 18 27 27 16 20 26 14 55 -1.16 167 0 0 26 37 16 13 37 51.7 41 189 -50 27 4 29 26 10 18 27 8 5 26 6 46 -1.16 168 0 0 26 29 36 13 37 43.4 41 191 -50 26 56 47 26 2 40 27 0 22 25 59 9 -1.16 169 0 0 26 22 29 13 37 35.1 41 192 -50 26 49 37 25 55 35 26 53 12 25 52 4 -1.16 170 0 0 26 15 54 13 37 26.8 41 193 -49 26 43 0 25 49 2 26 46 35 25 45 31 -1.16 171 0 0 26 9 51 13 37 18.5 40 194 -49 26 36 56 25 43 1 26 40 30 25 39 31 -1.16 172 0 0 26 4 21 13 37 10.2 40 195 -49 26 31 24 25 37 33 26 34 58 25 34 3 -1.16 173 0 0 25 59 23 13 37 2.0 40 196 -49 26 26 25 25 32 36 26 29 58 25 29 7 -1.16 174 0 0 25 54 58 13 36 53.8 40 198 -48 26 21 58 25 28 13 26 25 32 25 24 43 -1.16 175 0 0 25 51 6 13 36 45.6 40 199 -48 26 18 5 25 24 21 26 21 38 25 20 52 -1.16 176 0 0 25 47 46 13 36 37.5 40 200 -47 26 14 44 25 21 3 26 18 18 25 17 33 -1.17 177 0 0 25 44 59 13 36 29.4 39 201 -47 26 11 56 25 18 17 26 15 30 25 14 48 -1.17 178 0 0 25 42 45 13 36 21.4 39 202 -47 26 9 42 25 16 3 26 13 15 25 12 34 -1.17 179 0 0 25 41 4 13 36 13.4 39 203 -46 26 8 0 25 14 23 26 11 34 25 10 54 -1.17 180 0 0 25 39 56 13 36 5.5 38 204 -46 26 6 52 25 13 15 26 10 25 25 9 46 -1.17 -179 0 0 25 39 21 13 35 57.6 38 205 -45 26 6 17 25 12 40 26 9 50 25 9 11 -1.17 -178 0 0 25 39 19 13 35 49.8 38 206 -45 26 6 15 25 12 37 26 9 48 25 9 8 -1.17 -177 0 0 25 39 50 13 35 42.0 37 207 -44 26 6 46 25 13 8 26 10 19 25 9 39 -1.17 -176 0 0 25 40 54 13 35 34.3 37 208 -44 26 7 51 25 14 11 26 11 24 25 10 42 -1.17 -175 0 0 25 42 31 13 35 26.7 36 209 -43 26 9 28 25 15 48 26 13 2 25 12 18 -1.17 -174 0 0 25 44 41 13 35 19.2 36 210 -42 26 11 39 25 17 57 26 15 13 25 14 28 -1.17 -173 0 0 25 47 24 13 35 11.8 35 211 -42 26 14 23 25 20 39 26 17 57 25 17 10 -1.17 -172 0 0 25 50 40 13 35 4.4 35 212 -41 26 17 41 25 23 54 26 21 15 25 20 24 -1.17 -171 0 0 25 54 30 13 34 57.1 34 213 -40 26 21 32 25 27 42 26 25 6 25 24 12 -1.17 -170 0 0 25 58 52 13 34 50.0 34 214 -40 26 25 56 25 32 3 26 29 30 25 28 33 -1.17 -169 0 0 26 3 48 13 34 42.9 33 215 -39 26 30 53 25 36 57 26 34 28 25 33 27 -1.17 -168 0 0 26 9 16 13 34 35.9 33 215 -38 26 36 24 25 42 24 26 39 59 25 38 53 -1.17 -167 0 0 26 15 18 13 34 29.0 32 216 -38 26 42 28 25 48 23 26 46 3 25 44 52 -1.17 -166 0 0 26 21 53 13 34 22.3 32 217 -37 26 49 5 25 54 56 26 52 41 25 51 25 -1.18 -165 0 0 26 29 1 13 34 15.6 31 218 -36 26 56 16 26 2 1 26 59 52 25 58 30 -1.18 -164 0 0 26 36 42 13 34 9.1 30 219 -35 27 4 0 26 9 39 27 7 36 26 6 8 -1.18 -163 0 0 26 44 56 13 34 2.7 30 220 -35 27 12 16 26 17 50 27 15 53 26 14 18 -1.18 -162 0 0 26 53 42 13 33 56.4 29 220 -34 27 21 6 26 26 34 27 24 43 26 23 1 -1.18 -161 0 0 27 3 2 13 33 50.2 28 221 -33 27 30 29 26 35 50 27 34 6 26 32 17 -1.18 -160 0 0 27 12 54 13 33 44.2 28 222 -32 27 40 25 26 45 39 27 44 3 26 42 6 -1.18 -159 0 0 27 23 20 13 33 38.3 27 222 -32 27 50 54 26 56 1 27 54 32 26 52 27 -1.18 -158 0 0 27 34 17 13 33 32.5 26 223 -31 28 1 55 27 6 55 28 5 34 27 3 20 -1.18 -157 0 0 27 45 48 13 33 26.9 25 224 -30 28 13 30 27 18 21 28 17 9 27 14 46 -1.18 -156 0 0 27 57 50 13 33 21.4 25 225 -29 28 25 37 27 30 20 28 29 17 27 26 44 -1.18 -155 0 0 28 10 25 13 33 16.1 24 225 -28 28 38 16 27 42 50 28 41 57 27 39 14 -1.19 -154 0 0 28 23 33 13 33 10.9 23 226 -27 28 51 28 27 55 53 28 55 9 27 52 17 -1.19 -153 0 0 28 37 12 13 33 5.9 22 227 -27 29 5 12 28 9 28 29 8 54 28 5 51 -1.19 -152 0 0 28 51 23 13 33 1.0 22 227 -26 29 19 29 28 23 34 29 23 11 28 19 56 -1.19 -151 0 0 29 6 6 13 32 56.3 21 228 -25 29 34 17 28 38 12 29 38 0 28 34 34 -1.19 -150 0 0 29 21 21 13 32 51.8 20 228 -24 29 49 37 28 53 22 29 53 21 28 49 43 -1.19 -149 0 0 29 37 7 13 32 47.4 19 229 -23 30 5 29 29 9 3 30 9 14 29 5 23 -1.19 -148 0 0 29 53 25 13 32 43.3 18 230 -22 30 21 52 29 25 15 30 25 37 29 21 34 -1.19 -147 0 0 30 10 13 13 32 39.2 17 230 -21 30 38 46 29 41 57 30 42 33 29 38 16 -1.20 -146 0 0 30 27 32 13 32 35.4 17 231 -21 30 56 12 29 59 11 30 59 59 29 55 28 -1.20 -145 0 0 30 45 22 13 32 31.8 16 231 -20 31 14 8 30 16 54 31 17 56 30 13 11 -1.20 -144 0 0 31 3 42 13 32 28.3 15 232 -19 31 32 34 30 35 8 31 36 23 30 31 25 -1.20 -143 0 0 31 22 32 13 32 25.0 14 233 -18 31 51 31 30 53 52 31 55 21 30 50 7 -1.20 -142 0 0 31 41 52 13 32 21.9 13 233 -17 32 10 57 31 13 5 32 14 48 31 9 20 -1.21 -141 0 0 32 1 41 13 32 19.0 12 234 -16 32 30 54 31 32 48 32 34 45 31 29 1 -1.21 -140 0 0 32 21 59 13 32 16.3 11 234 -15 32 51 19 31 52 59 32 55 11 31 49 12 -1.21 -139 0 0 32 42 46 13 32 13.8 11 235 -14 33 12 13 32 13 39 33 16 6 32 9 51 -1.21 -138 0 0 33 4 1 13 32 11.5 10 235 -13 33 33 35 32 34 47 33 37 30 32 30 58 -1.22 -137 0 0 33 25 44 13 32 9.4 9 236 -12 33 55 26 32 56 22 33 59 21 32 52 33 -1.22 -136 0 0 33 47 55 13 32 7.5 8 237 -12 34 17 44 33 18 25 34 21 40 33 14 35 -1.22 -135 0 0 34 10 32 13 32 5.8 7 237 -11 34 40 29 33 40 55 34 44 26 33 37 3 -1.23 -134 0 0 34 33 36 13 32 4.3 6 238 -10 35 3 40 34 3 51 35 7 39 33 59 59 -1.24 -133 0 0 34 57 6 13 32 3.0 5 238 -9 35 27 18 34 27 13 35 31 18 34 23 20 -1.25 -132 0 0 35 21 1 13 32 1.9 4 239 -8 35 51 21 34 51 1 35 55 22 34 47 6 -1.26 -131 0 0 35 45 20 13 32 1.0 3 239 -7 36 15 49 35 15 12 36 19 51 35 11 17 -1.28 -130 0 0 36 10 5 13 32 0.4 3 240 -6 36 40 42 35 39 49 36 44 45 35 35 52 -1.31 -129 0 0 36 35 12 13 31 59.9 2 241 -5 37 5 58 36 4 48 37 10 2 36 0 50 -1.38 -128 0 0 37 0 43 13 31 59.7 1 241 -4 37 31 37 36 30 10 37 35 42 36 26 11 -1.63 -127 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 36 55 55 .. .. .. 36 51 55 .... Uncertainty in time = +/- 1 secs Prediction of 2023 Mar 1.1 Data for the target star ------------------------ * name: UCAC4-340-069587 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 11 25.5581 DE: -22 08 14.189 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 11 25.5581 DE: -22 08 14.189 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (337) Devosa asteroid class: approx. diameter [km]: 64 approx. diameter ["]: 0.058 distance from Earth [AU]: 1.52090 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#101 date of fit: 2023 Feb 07 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.009", 0.003", 116.675° remarks: * orbital elements for (337)Devosa : Mean anomaly = 106.5428347541 deg Arg. of pericenter = 99.4666680184 deg Long. of node = 355.3424536712 deg Inclination = 7.8594420647 deg Eccentricity = 0.1364500893 Semimajor axis = 2.3837279293 AU Perihelion dist = 2.0584680406 AU Mag: H = 8.81, G = 0.19 Epoch of elements : MJD 60055.56798611 TDT (2023 Apr 21.5680) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1012023Feb07,5.51,2023,4,21,13.631969,0.112926,0.748851,-6.520809,0.983481,-0.000386,0.001000,0.000001,0.000000 159.3367,-22.2480,-24.79,11.89,False UCAC4-340-069587,14.19043279,-22.1372746,0.00,12.49,0.00,0.0,0,,14.21239294,-22.2480182,0.58,0.00,0,0,0 337,Devosa,12.12,64.4,1.5209,0,0,-2.715,5.69,,3.8,0 0,106.3907,2023,4,21,99.4667,355.3425,7.8594,0.13645,2.38373,2.05847,8.82,5.0,0.15 1.066,0.0093,0.0026,117,0.0038,Known errors,-1.00,-1,-1,-1 20230421_069587,60004.05 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Mar 01, 01:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org